<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <script type="text/javascript">
        var employees = [
            {"firstName":"王晓雯","lastName":"vivian"},
            {"firstName":"朱长静","lastName":"changjing"},
            {"firstName":"刘兰兰","lastName":"lanlan"}
        ];

        window.onload = function(){
            employees[0].lastName = "VIVIAN";
            for(var i = 0;i<employees.length;i++){
                alert(employees[i].firstName+";"+employees[i].lastName);
            }
        };
    </script>
</head>
<body>

</body>
</html>